How to migrate from ISCSI to FC?

You don't need to migrate the LUNs.Unmount the VMFS volumes and remove the iSCSI connections in vCenter. Remove the iSCSI host from the Storage Group in Unisphere and unregister the host. Attach the host to the array by zoning and registering the host in Unisphere. Add the host host into the same storage group from which you removed the iSCSI host from and perform a disk rescan.

The host used the iSCSI protocol to see the LUNs. The LUNs are still created on RAID Groups/Pools. All you are doing is changing the protocol the host is using to communicate to the VNX. Thus, a migration is not necessary. You just need to clean up the iSCSI configuration and configure the fibre configuration.

You said "little impact" and not "no downtime"

You can zone and register the host before removing the iSCSI connections. Get a lot of that work done before unmounting the VMFS datastore. The downtime we are talking about is 2 minutes. If you have swing space you can present LUNs via fibre and perform storage vMotion from iSCSI to fibre datastores. Personally, take a few minutes of downtime to get this done. Will make your life a lot easier.

Hi thank you,

but this procedure is with downtime.

You cannot access a LUN over iSCSI as well as FC at the same time, so yes, there will be downtime.

Message was edited by: RRR Why did I even respond to this one? That happpens when you reply by email..... Note to myself: sort email on topic and look if there's other answers as well

Forgot about that, thank you for the correction dynamox

connecting one host via iSCSI and FC at the same time is not supported.

It wouldnt be a bad idea though to create a new small ISCSI test LUN to work out the correct steps for zoning and making it available through FC before doing that to the production LUNs

That will help minimize the downtime

I think connecting is actually not a problem, we can connect and even zone the servers at the SAN, but we cannot register the host as the same hostname can't have iscsi and FC registration at the array. Please correct me if i am wrong....

Hi Ernes,

Can you please suggest if there is some document which gives the steps which can be referred to.

Hello Jeanpa I think you must have got this figured out by now, can you please suggest the way you went please